In the old Frame versions I could easily do this. But Frame 11 just gives me tabs and seems to allow only one tab to open at a time. I guess I could run two instances of Frame but that would hog my cpu.
Many options exist, but the 2 fastest ways are:
-drag one of the tabs out of the tabbed interface and rearrange as needed
-use the 2nd of 3 buttons in the menu bar (Arrange Documents) to display your documents in various configurations.
For more info, see FrameMaker Interface Options, p20 of my book.
Matt R. Sullivan
co-author Publishing Fundamentals: Unstructured FrameMaker 11